Chemiluminescent properties of some luminol related compounds (II)

Four new luminol related compounds having hydrazino or hydrazono group in t he structure, viz. 6-hydrazinophthalazine-1,4(2H,3H)-dione (6-HP), 1,4-diox o-2,3-dihydrophthalazine-6-carbaldehyde hydrazone (6-PCH), 6-hydrazinomethy lphthalazine-1,4 (2H,3H)-dione (6-HMP) and 6-[N-(3-Propionohydrazino)thiour eido]benzo[g]phthalazine-1,4(2H,3H)-dione (PROB), were newly synthesized. T he chemiluminescent properties of the compounds were examined, and compared with other luminol analogues. All evaluated compounds produced chemilumine scence by reaction with hydrogen peroxide in the presence of potassium hexa cyanoferrate(III) in sodium hydroxide solution. Chemiluminescence intensiti es were affected by the concentrations of hydrogen peroxide, potassium hexa cyanoferrate(III) and sodium hydroxide. Chemiluminescence reaction conditio ns, and the time dependence of the chemiluminescence of the compounds and l uminol as a reference, were studied. 6-HP, 6-PCH, 6-HMP and PROB were found to produce chemiluminescence 1.4, 0.2, 0.1 and 32.5% of luminol, respectiv ely. (C) 1999 Elsevier Science Ltd. All rights reserved.